package cipher.util;

public interface IFCrypt {
	public byte[] encrypt(byte [] buf,int st,int len);
	public int encrypt(byte [] buf,int st,int len,byte[] out);
	public byte[] decrypt(byte [] buf,int st,int len);
	public int decrypt( byte [] str, int pos ,int off, byte [] rtn) ;
	public int decrypt( byte [] str, int pos ,int off, byte [] rtn, int rtnstart) ;
}
